GB491662A - Improvements in or relating to electromagnetic relays - Google Patents
Improvements in or relating to electromagnetic relaysInfo
- Publication number
- GB491662A GB491662A GB671837A GB671837A GB491662A GB 491662 A GB491662 A GB 491662A GB 671837 A GB671837 A GB 671837A GB 671837 A GB671837 A GB 671837A GB 491662 A GB491662 A GB 491662A
- Authority
- GB
- United Kingdom
- Prior art keywords
- springs
- resistance
- armature
- coils
- contacts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
491,662. Light current relays. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., GRAHAM, J. ST.-C. W., and SHARPE, H. D. March 6, 1937, No. 6718. [Class 38 (v)] As shown in Figs. 1 and 3, the operating electromagnet comprises a pair of coils 6 on a U-shaped core 2 the poles of which are below lateral extensions of an armature 7 consisting of a flat blade of springy magnetic material which is clamped at one end to lie along the length of a supporting member 1. The member 1 may, as shown, be the yoke of a standard telephone relay, one end of which is suitably bent. The armature has contacts on opposite sides adapted to engage corresponding contacts on upper and lower relatively rigid springs 9, 10 in the unoperated end operated positions respectively, backing springs 11, 12 being provided to reinforce the springs 9, 10. The core 2 is mounted on but magnetically insulated from the support 1. To secure rapidity of operation the ratio of inductance to resistance is kept low and a considerable proportion of this resistance is made external to the coils by being wound on a china former 15 attached to the member 1, this arrangement additionally providing adequate cooling facilities for the additional resistance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB671837A GB491662A (en) | 1937-03-06 | 1937-03-06 | Improvements in or relating to electromagnetic relays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB671837A GB491662A (en) | 1937-03-06 | 1937-03-06 | Improvements in or relating to electromagnetic relays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB491662A true GB491662A (en) | 1938-09-06 |
Family
ID=9819514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB671837A Expired GB491662A (en) | 1937-03-06 | 1937-03-06 | Improvements in or relating to electromagnetic relays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB491662A (en) |
-
1937
- 1937-03-06 GB GB671837A patent/GB491662A/en not_active Expired
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